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球粒陨石的或与之相关的。 A stone of meteoric origin characterized by chondrules. | ||
阿连德陨石被归类为球粒陨石。 The Allende meteorite is classified as a chondrite. | ||
陨石进一步细分为两类：球粒状陨石和无球粒陨石。 Aeroliths are further subdivided into two classes: chondrites and achondrites. | ||
阿伦德陨星里的陨石球粒和内含物是由球粒陨石基质结合到一起的；这是一种细粒混合物，主要包括铁颗粒和硫化铁的硅酸盐矿物。 Chondrules and inclusions in Allende are held together by the chondrite matrix, a mixture of fine-grained, mostly silicate minerals that also includes grains of iron metal and iron sulfide. | ||
采用仪器中子活化方法分析了宁强碳质球粒陨石基质及暗色边化学成份。 The chemical compositions of the Ningqiang carbonaceous chondrite matrix and a dark rim are analysed with instrumental neutron activation method. | ||
碳质球粒陨石星子被吸积于原始地球上地幔表层，形成原始富碳区。 Carbonaceous chondrite planetesimals were adsorbed on the mantle surface of the primitive earth, forming primitive carbon-rich areas. | ||
曾经有人认为，这些基质颗粒可能是原始的星云尘埃，即形成陨石球粒及其内含物的物质。 At one time it was thought that these matrix grains might be pristine nebular dust, the sort of stuff from which chondrules and inclusions were made. | ||
所有这些不同的成分聚集形成像阿连德一样的球粒陨石，具有很类似于太阳的化学成分。 All these diverse constituents are aggregated together to form chondritic meteorites, like Allende, that have chemical compositions much like that of the Sun. | ||
（真题）铁矿、陨铁石、球粒状陨石及无球粒陨石在可观测到的陨石中绝不多见。 Irons, stony-irons, chondrite, and achondrites are by no means equally abundant among observed meteorites. | ||
在黄河三角洲新识别出6种冰冻沉积构造：冰劈裂缝、冰成滑痕、冰塌裂缝、冰成球粒、冰蚀波痕和冰位痕。 Six sedimentary structures, ice split seams, ice slid marks, ice collapsed seams, ice induced pellets, ice eroded ripple marks and ice level marks, are newly found in Yellow River delta. | ||
